9867731 has 2 divisors, whose sum is σ = 9867732. Its totient is φ = 9867730.

The previous prime is 9867721. The next prime is 9867761. The reversal of 9867731 is 1377689.

9867731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9867731 - 2¹⁰ = 9866707 is a prime.

It is a super-2 number, since 2×9867731² = 194744230176722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9867721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4933865 + 4933866.

It is an arithmetic number, because the mean of its divisors is an integer number (4933866).

Almost surely, 2^9867731 is an apocalyptic number.

9867731 is a deficient number, since it is larger than the sum of its proper divisors (1).

9867731 is an equidigital number, since it uses as much as digits as its factorization.

9867731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 41.

The square root of 9867731 is about 3141.2944783958. The cubic root of 9867731 is about 214.4893668784.

The spelling of 9867731 in words is "nine million, eight hundred sixty-seven thousand, seven hundred thirty-one".